...this very serious matter, called the "back-door draft". There are numerous horror stories about this on the internet. Here is one from not that long ago:
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Gulf War Veteran Sues Army Over Involuntary Recall, Called Up 13 Years After Honorable Discharge in “Back-Door Draft”
HONOLULU, HI -- November 9 -- On November 5, Kauai, Hawai’i, resident David M. Miyasato filed a lawsuit here in the United States District Court seeking to restrain the United States Army from involuntarily recalling him to active duty.
After being ignored by the Army for weeks, the Army responded within hours after Miyasato filed his suit, granting him an “administrative delay” for up to 30 days, and notifying Mr. Miyasato he would soon be receiving a “new report date”.
His attorney, Eric A. Seitz, said, “My belief is that the Army is hard-pressed to recruit enough troops to send to Iraq and they're activating reserves as means to avoid implementing the draft. This, however, is a back-door draft.”
Mr. Miyasato enlisted in the Army in 1987 for a term of eight years. His enlistment contract specified that he would serve on active duty for three years and then be enrolled in the inactive reserves for five additional years.
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http://www.commondreams.org/news2004/1109-09.htmGood luck, I hope you can find help for your son not to have to return.